Just after takeoff the Magni M24C Orion autogyro’s engine stopped. With no further useable runway available, the pilot turned slightly right into wind to land on a taxiway, but the autogyro bounced before rolling onto its left side, causing damage to the rotor, propeller blades and tail. The pilot suffered bruising and minor injuries to his legs. Prior to the flight he had bought some unleaded fuel which he put in a metal can that he had used for a number of years. When refuelling the aircraft he had concerns about the colour of the fuel, but convinced himself that it was good after checking the flammability of a small sample. On reflection, he suspects the fuel was probably contaminated, causing the engine to stop and that, during the subsequent landing, he let the airspeed drop below the craft’s recommended landing speed.